hider of truths
Name ____________________________________
Period ________
Date __________
EXTRA CREDIT: Dimensional Analysis and The Crash of Flight 143
This assignment is worth 5 bonus points on your Measurement Test.
Read the accompanying article “The Crash of Flight 143,” ChemMatters, October, 1996, pp. 12-15.
Answer the following questions completely.
1. What are the three possible causes of the 767’s fuel pump alarm?
1)
2)
3)
2. The second fuel pump alarm made which possible cause most likely?
3. The faulty calculation occurred when converting from liters to kilograms. Why isn’t jet fuel measured by volume like gasoline is in cars?
4. What units were needed on the number 1.77 to express the density of jet fuel?
5. What units should they have used in order to make the correct conversion?
6. How did their calculation error affect the amount of fuel that was pumped into the plane?
7. Explain how using dimensional analysis could have prevented this crash.
8. Calculate the volume of fuel needed for a flight if jet fuel has a density of 0.803 kg/L. First, use dimensional analysis to convert liters to kilograms. Then, subtract to find how many kilograms need to be added. Then, use dimensional analysis to convert this mass into liters. For full credit, you must show your work, include units, and round off each answer to the correct number of sig figs.
Volume on board
8,550. L
Mass on board
Mass required for flight
Mass to be added
Volume to be added
Extra Credit – Dimensional Analysis
23,800. kg
M Y S T E R Y
I
M A T T E R S
by Peter Banks
t was a smooth flight as Air Canada 143 made its way from
Montreal to Edmonton on the afternoon of July 23, 1983.
Below were cottony clouds, ahead only blue sky and clear air. The Boeing 767 cruised at 469 knots, nearing a route checkpoint at Red Lake, Ontario.
12 CHEM MATTERS, OCTOBER 1996
In the cockpit, Captain Robert Pearson chatted amiably with his
The pilots set the flaps for the single-engine landing, hoping in
first
Period ________
Date __________
EXTRA CREDIT: Dimensional Analysis and The Crash of Flight 143
This assignment is worth 5 bonus points on your Measurement Test.
Read the accompanying article “The Crash of Flight 143,” ChemMatters, October, 1996, pp. 12-15.
Answer the following questions completely.
1. What are the three possible causes of the 767’s fuel pump alarm?
1)
2)
3)
2. The second fuel pump alarm made which possible cause most likely?
3. The faulty calculation occurred when converting from liters to kilograms. Why isn’t jet fuel measured by volume like gasoline is in cars?
4. What units were needed on the number 1.77 to express the density of jet fuel?
5. What units should they have used in order to make the correct conversion?
6. How did their calculation error affect the amount of fuel that was pumped into the plane?
7. Explain how using dimensional analysis could have prevented this crash.
8. Calculate the volume of fuel needed for a flight if jet fuel has a density of 0.803 kg/L. First, use dimensional analysis to convert liters to kilograms. Then, subtract to find how many kilograms need to be added. Then, use dimensional analysis to convert this mass into liters. For full credit, you must show your work, include units, and round off each answer to the correct number of sig figs.
Volume on board
8,550. L
Mass on board
Mass required for flight
Mass to be added
Volume to be added
Extra Credit – Dimensional Analysis
23,800. kg
M Y S T E R Y
I
M A T T E R S
by Peter Banks
t was a smooth flight as Air Canada 143 made its way from
Montreal to Edmonton on the afternoon of July 23, 1983.
Below were cottony clouds, ahead only blue sky and clear air. The Boeing 767 cruised at 469 knots, nearing a route checkpoint at Red Lake, Ontario.
12 CHEM MATTERS, OCTOBER 1996
In the cockpit, Captain Robert Pearson chatted amiably with his
The pilots set the flaps for the single-engine landing, hoping in
first